Method and device for the cyclic digital transmission of a position value of a moving object with inertial mass

A method for closed-loop control of a drive, comprising:

• recurrently detecting a position value over time;
• and
• transmitting associated information to a control device;
• wherein the position value includes at least two values, including a partial-angle value, a fine-angle value, and/or digital values, the first value being denotable with a whole number, and a position-value range being assigned to each number, each position range including a first value being assigned mutually separate sub-ranges of the position range, each of these sub-ranges including a second value denotable as a whole number, the second value being transmitted prior in time to the first value;
• wherein:
• (i) after a newly detected second value has been transmitted, a model value is determined for the first value from the newly detected and a previously transmitted second value, and the position value determined is used by a control device to determine an updated value of a manipulated variable of the control device;
• and
• (ii) after the newly detected second value has been transmitted, the newly detected first value is transmitted, and the model value determined is compared to the newly detected first value, and an action is carried out if they do not agree,
• wherein the action includes communication and/or display of warning information, bringing the drive to rest, and/or transferring the drive into a safe state;
• wherein the manipulated variable includes a voltage space vector and/or a stator-voltage space vector of an electric motor of the drive.